S-91101A035 0.641" ID x 1.073" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through the split design that maintains constant spring tension against loosening under dynamic loads
• Exceptional durability with Rockwell C38 hardness steel construction that withstands repeated assembly cycles without deformation
• Precision dimensional fit with 0.641" ID and 1.073" OD ensuring optimal contact surface for 5/8" fasteners
• Industry-standard compliance meeting ASME B18.21.1 specifications for reliable performance in critical applications
• Enhanced safety and reliability through consistent locking action that prevents fastener back-off in high-vibration environments
• Environmental compliance with RoHS 3 and REACH regulations for use in regulated industries and global markets
• Versatile industrial application suitable for machinery, equipment, and structural assemblies requiring secure, vibration-resistant fastening

Professional Applications & Engineering Value

This 5/8" steel split lock washer delivers critical vibration resistance in demanding industrial environments where fastener integrity is paramount. The standard split lock washer design creates continuous spring tension that counters rotational forces and prevents loosening in machinery, heavy equipment, and structural applications. Manufactured from high-strength steel with Rockwell C38 hardness, this washer maintains its locking properties through multiple installation cycles without losing tension. The precision 0.641" ID and 1.073" OD dimensions ensure proper fitment with standard 5/8" fasteners while the 0.156" thickness provides optimal deflection characteristics. Engineered to ASME B18.21.1 standards, this inch system lock washer offers reliable performance in automotive, manufacturing, and construction applications where vibration-induced fastener failure poses significant operational risks.

Specification Summary & Compliance

This split lock washer features precision dimensions of 0.641" internal diameter, 1.073" outer diameter, and 0.156" thickness specifically engineered for 5/8" fasteners. Manufactured to meet ASME B18.21.1 specifications with Rockwell C38 hardness ensuring consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental standards for industrial applications.